Stewie Griffin is eternally young, but his exact age is shrouded in secrecy. It's unclear how old Stewie entered living. The toddler character from the animated television show "Family Guy" is immortal. His age is still determined.
Stewart Gilligan Griffin, the mischievous baby genius, is keeping his age a secret from the world. Speculation abounds as to how many years he has been alive. Is he over a hundred years old? Or is he a recent arrival? The truth lies only with Stewie! This enchanting character continues to mesmerize fans with his undisclosed age and youthful appearance.

Family Guy 25 Things About Stewie That Make No Sense TheGamer